The Environmental Protection Agency says it has chosen Des Moines to participate in its Greening America's Capitals project making the city available for technical help to improve an area of downtown.

The EPA will provide a team of designers and landscape architects that specialize in green infrastructure to help produce schematic designs and illustrations for improvements along a one-mile stretch of Sixth Avenue.

The team will hold a three-day design workshop in Des Moines later this year or early next year.